Skills

Datacenter Infrastructure

• Planning, building, and maintaining datacenter infrastructures for medium-sized businesses
• Selection and implementation of suitable server, network, storage, and backup solutions
• Ensuring high availability, scalability, and operational reliability

IT Integration of Subsidiaries

• Planning and implementation of full network integration for subsidiaries
• Project leadership: from concept to handover to central IT
• Migration of existing systems, site interconnects, alignment of Active Directory structures

Operating Systems & Servers

• Windows Server (2003–2022, incl. Core), Linux (Debian, Ubuntu, CentOS)
• Active Directory, Exchange, Group Policy, DNS, DHCP
• Microsoft Terminal Server / RDS
• Administration of NTFS permissions

Virtualization & Backup

• VMware, Citrix, Hyper-V
• Backup: Veeam, Acronis, Commvault
• Automated backup strategies, offsite backup, recovery testing
• Operating highly available virtualized environments

Networking & Security

• LAN/WAN, routing/switching (Cisco, HP, Juniper)
• Firewalls: Palo Alto, Juniper, Cisco, Sophos
• Network segmentation, site interconnects (MPLS, SD-WAN, VPN)
• VPN technologies: IPsec, SSL, site-to-site, remote access
• Security concepts based on tiering models (DMZ, internal zones)

Cloud & Azure

• Microsoft Azure: Azure AD, virtual networks, VPN gateway, Azure VMs
• Hybrid cloud architectures

Telephony & VoIP

• VoIP systems, PBXs
• 3CX (cloud & on-prem), Microsoft Teams integration, SIP trunk management

Monitoring & Infrastructure Management

• Zabbix: building and operating monitoring infrastructures
• Performance monitoring, alerting, and reporting

Web & Databases

• Web servers: IIS, Apache, Nginx
• Basic knowledge of SQL and NoSQL databases
• Monitoring & performance analysis